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Commit b99fee58 authored by Riccardo Schirone's avatar Riccardo Schirone Committed by Theodore Ts'o
Browse files

ext4: create ext4_feat kobject dynamically 



kobjects should always be allocated dynamically, because it is unknown
to whoever creates them when kobjects can be released.

Signed-off-by: default avatarRiccardo Schirone <sirmy15@gmail.com>
Signed-off-by: default avatarTheodore Ts'o <tytso@mit.edu>
parent 95c4df02

fs/ext4/sysfs.c

+22 −11
Original line number Diff line number Diff line
@@ -11,6 +11,7 @@ 
#include <linux/time.h>

#include <linux/fs.h>

#include <linux/seq_file.h>

#include <linux/slab.h>

#include <linux/proc_fs.h>



#include "ext4.h"
@@ -351,11 +352,10 @@ static struct kset ext4_kset = { 
static struct kobj_type ext4_feat_ktype = {

	.default_attrs	= ext4_feat_attrs,

	.sysfs_ops	= &ext4_attr_ops,

	.release	= (void (*)(struct kobject *))kfree,

};



static struct kobject ext4_feat = {

	.kset	= &ext4_kset,

};

static struct kobject *ext4_feat;



#define PROC_FILE_SHOW_DEFN(name) \

static int name##_open(struct inode *inode, struct file *file) \
@@ -438,20 +438,31 @@ int __init ext4_init_sysfs(void) 
		return ret;

	}



	ret = kobject_init_and_add(&ext4_feat, &ext4_feat_ktype,

	ext4_feat = kzalloc(sizeof(*ext4_feat), GFP_KERNEL);

	if (!ext4_feat) {

		ret = -ENOMEM;

		goto kset_err;

	}



	ext4_feat->kset = &ext4_kset;

	ret = kobject_init_and_add(ext4_feat, &ext4_feat_ktype,

				   NULL, "features");

	if (ret) {

		kobject_put(&ext4_feat);

		kset_unregister(&ext4_kset);

	} else {

	if (ret)

		goto feat_err;



	ext4_proc_root = proc_mkdir(proc_dirname, NULL);

	}

	return ret;



feat_err:

	kobject_put(ext4_feat);

kset_err:

	kset_unregister(&ext4_kset);

	return ret;

}



void ext4_exit_sysfs(void)

{

	kobject_put(&ext4_feat);

	kobject_put(ext4_feat);

	kset_unregister(&ext4_kset);

	remove_proc_entry(proc_dirname, NULL);

	ext4_proc_root = NULL;